George henry taylor



(No Model.)

Kw w m AN w .M m GT S Patented June '10, 1890.

L l l lm UNITED STATES PATENT OFFICE.

GEORGE HENRY TAYLOR, OF LIVERPOOL, COUNTY OF LANCASTER,

ENGLAND.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 429,976, dated June 10,1890.

Application filed February 25, 1890 Serial No. 341,779. (No model.)Patented in France March 29, 1889, No. 198,216 in Switzerland April 3,1889, No. 805; in Germany April 5,1889,No.49,387; in Belgium April 5,1889. No. 85,696; in Spain April 24, 1889,11'0. 9,509: in Italy May 18,1889, No. 25,462/9, and in Canada May 20. 1889, No. 32,579-

To all whom it may concern:

Be it known that I, GEORGE HENRY TAY- LOR, a subject of the Queen ofGreat Britain and Ireland, residing in Liverpool, county of Lancaster,England, have invented certain new and useful Improvements inSteam-Generators, (for which I have obtained patents in France, datedMarch 29, 1889, No. 198,216; in Germany, dated April 5, 1889, No. 49,337in Switzerland, dated April 3, 1889, No. 805; in Belgium, dated April 5,1889, No. 85,696; in Spain, dated April 24, 1889, No. 9,509; in Italy,dated May 18, 1889, No. 25,462/9, and in Canada, dated May 20, 1889, No.32,579,) of which the following is a specification.

The object of this invention is to so improve steam-generators as torender them free from foaming and priming, and by creating activecirculation within the generator to prevent sediment forming. Myconstruction of steam-generators also permits of the parts being readilycleaned when necessary.

The improved steam-generatoris illustrated by the accompanying drawings,in which- Figure 1 is a longitudinal vertical section; Fig. 2, across-section on the line A A of Fig. 1, and Fig.3 a cross-section onthe line B B of Fig. 1.

Z is the shell of the generator. a a are the fire-tubes thereinconveying the heated gases from the furnace to the cylindrical drum orWaste-heat box b, which is situated below the water-level. Attached tothis waste-heat box is a cylindrical metallic hood 0-, which surroundsthe fire-tubes a a and the lower portion of the water-circulating tubes6 e. The hood, where bolted to the waste-heat box I), is provided with aflatrim c, sufficiently wide to permit of the relief or anti-primingtubes at clbeing secured thereto. 6 e are the watercirculating tubescarried by the upper plate f of the Waste-heat box and passing throughthe lower plate f. The free ends of these tubes pass downward andterminatea short distance above the tube-plate f. The heated gases, asthey pass up the fire-tubes a a into the waste-heat box I), impart heatto the surrounding water and pass away through the exit-pipe g, and maybe utilized to heat the feed-water or for other convenient purpose.

The circulation of the Water is shown by the arrows in Fig. 1. Bycontact with the tube-plates f and f and fire-tubes a a the waterbecomes heated, and, escaping from within the cylindrical hood 0, risesup the space between the said hood and the walls of the generator. Afterbecoming cooled it descends through the water-circulating tubes 6 e andreturns into the cylindrical hood, where it again becomes heated and alike circulation takes place. In order to reduce the energy of thiscirculation or ebullition, and thus prevent priming, the relief tubes (ld are provided, so as toallow some of the heat ed water to pass upwardthrough them.

hat I claim, and desire to secure by Letters Patent, is

1. In a steam-generator, the combination, with the lower tube-plate fand the waste-heat box I), situated below the Water-level and providedwith exit-pipe g, of the fire-tubes a, extended downward from the bottomof said box to the tube-plate f, and the circulatingpipes 6, passedthrough the waste-heat box and extended down to within a short distanceof the lower tube-plate, substantially as described.

2. In a steam generator having a Wasteheat box I), situated below thewater-level and provided With fire-tubes a. and exit-pipe g, thecombination therewith of a metallic cylindrical hood 0, bolted to saidwaste-heat box and surrounding the circulating-tubes e, substantially asdescribed.

3. In a steam-generator having a wasteheat box I), situated below thewater-level and provided with fire-tubes a and exit pipe g, thecombination therewith of relief or anti-priming-tubes (Z, carried by therim 0 of the me tallic cylindrical hood 0, substantially as described.

4. A steam-generator comprising as its essential features a metalliccylindrical hood 0,

carrying relief or anti-priming tubes (1, firemy name in the presence oftwo subscribing tubes a, surrounded by said hood, and a, waste-Witnesses. heat box carrying wateneireulating tubes (2, GEORGE HENRYTAYLOR. extending downwm'd into the hood 0, and an 5 exit-pipe g, allsubstantially as shown and Witnesses:

described. FRANCIS GILMOUR, In witness whereof I have hereunto signedHARRY CREBBIN.

